func <%= resource_name -%>DiffSuppress(_, old, new string, _ *schema.ResourceData) bool {
	newParts := strings.Split(new, "appengine-")

	if len(newParts) == 1 {
		// `new` is only the app engine id
		// `old` is always a long name
		if strings.HasSuffix(old, fmt.Sprintf("appengine-%s", new)) {
			return true
		}
	}
	return old == new
}